hi
we are running exchange 2007 sp1 randomly during a mailbox backup the networker module crashes
we have version 5.1.1.294 of the exchange module.

error below

Event Type: Information
Event Source: Application Error
Event Category: (100)
Event ID: 1004
Date: 28/01/2009
Time: 8:04:24 AM
User: N/A
Computer: YALE
Description:
Reporting queued error: faulting application nsrxchmbsv.exe, version 5.1.1.294, faulting module nsrxchmbsv.exe, version 5.1.1.294, fault address 0x0002ff92.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
Data:
0000: 41 70 70 6c 69 63 61 74 Applicat
0008: 69 6f 6e 20 46 61 69 6c ion Fail
0010: 75 72 65 20 20 6e 73 72 ure nsr
0018: 78 63 68 6d 62 73 76 2e xchmbsv.
0020: 65 78 65 20 35 2e 31 2e exe 5.1.
0028: 31 2e 32 39 34 20 69 6e 1.294 in
0030: 20 6e 73 72 78 63 68 6d nsrxchm
0038: 62 73 76 2e 65 78 65 20 bsv.exe
0040: 35 2e 31 2e 31 2e 32 39 5.1.1.29
0048: 34 20 61 74 20 6f 66 66 4 at off
0050: 73 65 74 20 30 30 30 32 set 0002
0058: 66 66 39 32 ff92

Any ideas?